Senior Active Directory Administrator - Onsite in Austin

Core Scientific, Inc; Austin (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

Core Scientific, Inc. seeks a strong generalist Systems Administrator focused on Active Directory. You’ll own health, security, and day-to-day AD administration while partnering with identity, security, and endpoint teams to keep the environment clean and modern.

This is a fully on-site role in downtown Austin. Ideal candidates have 5+ years of hands-on systems administration, deep AD expertise, and strong PowerShell skills for automation, reporting, and bulk operations.

Qualifications

• 5+ years of hands-on systems administration experience in a professional environment.
• Very strong Active Directory expertise: domain services, Group Policy, replication, trusts, sites and services, and directory security.
• Deep experience managing domain controllers, DNS, and DHCP in a production environment.
• Strong PowerShell skills for AD automation, reporting, and bulk operations.
• Experience with hybrid identity concepts and directory synchronization to cloud platforms.
• Clear written and verbal communication and strong documentation habits.
• Ability to work on-site full-time in downtown Austin, TX.

Responsibilities

• Own day-to-day Active Directory administration: user, group, and computer object management, OU design, delegation, and directory hygiene.
• Design, maintain, and troubleshoot Group Policy across the environment, keeping GPOs consolidated, documented, and effective.
• Administer and maintain domain controllers, including replication health, FSMO roles, backups/recovery, and patching.
• Manage core network services tied to the directory: DNS, DHCP, and site/subnet topology.
• Harden and secure the directory: tiered administration, least‑privilege delegation, privileged account management, and remediation of common AD attack paths.
• Support hybrid identity, including directory synchronization to cloud identity platforms and clean attribute/data flows.
• Automate routine directory tasks and reporting with PowerShell.
• Support day‑to‑day IT operations across the environment: escalated troubleshooting, server and SaaS administration, and infrastructure projects as needed.
• Participate in audits and access reviews with clear evidence from the directory.
• Document architecture, processes, and runbooks so the environment is well understood and supportable.
• Foster open, respectful, and professional communication directly within the team as well as with co‑workers/ teammates and leaders across the organization.
• Performs other duties as assigned.

Skills

Active Directory

PowerShell

Windows Server

Documentation

Communication

Tools

Okta administration

Entra ID

Intune administration

Jamf Pro

Job description

Core Scientific, Inc. seeks a strong generalist Systems Administrator focused on Active Directory. You’ll own health, security, and day-to-day AD administration while partnering with identity, security, and endpoint teams to keep the environment clean and modern.

This is a fully on-site role in downtown Austin. Ideal candidates have 5+ years of hands-on systems administration, deep AD expertise, and strong PowerShell skills for automation, reporting, and bulk operations.